Earth anchor



Aug 13, 1929,

E. K. COLE EARTH ANCHOR Filed July 12, 1927 atented Aug. 13, 1929.

' FFICE.

ELMER K. -JOLE, OF WINTERSELIQWA.

EARTH ancnon.

Application filed m 12,

The object of my invention is to'provide a cable anchor of simple, durable and inexpensive construction, which may be formed reduce the weight of the anchor without materially decreasing its stren h, and at the same time increasin its e ciency.-

My invention consists in the construction, arrangement and combination of the various parts of the device, whereby the objects contem lated are attained, as hereinafter more ully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in'which:

Figure 1 is a side elevation of my imrovide cable anchor showing the manner in which'it is placed in a suitable opening in the ground.

' tional view of the anchor.

Figure 2 IS a side elevation showing the manner in which the anchoring device is ex anded, in its normal anchorin position.

igure 3 is a detail, longitu inal, sec- Figure 4 is a perspective view of a double anchor sup ortedon a sin le rod.

Figure 5 1s a slightly mo ified form.

The numeral 10 indicates the anchor rod having an eye 11 at its upper end, and its,

.lower end provided with screw threaded portion 12. The anchor comprises spaced Y illustrated in Figures 1 and 3. The head members 13 are each provided with a reinforcing plate 17. The said reinforcing-- plates and head members are provided wi central openings 18 .for receiving the threaded portion of the rod 12. The

threaded portion of the rod 12 is providedwith a nut 19, which prevents upward movement of the upper one of the head members '13, while the lower end of the rod 12 is provided with a nut 20 for engaging the lower head member 13. The lower reinforcing plate 17 is provided with an opening for receiving said nut, and outwardly extendi'ound by actu to a straightened position. A

' smal 1927- Serial Ho. 205,128. 2

ing flanges21 for preventing the nut from I. v

rotating relative to the reinforcing plate and its adjacent head member. A spacing sleeve 22 is slidably mounted on the rtion 12. between the head members 13, an limits so the inward movement of said head members as they are drawn together. i

In actual practice the anchor is assembled as shown' in Figure 3, then placed in a hole 23 in the ground.- After the anchor has been placed in the-hole 23, which is slightly larger than the distance between the inner I 1 ends of the members 14, the anchor is .temporarily supported againstrotation by any convenient means at hand,after which the rod 10 is rotated, which will cause the nut 20 to be moved inwardly and the head members 13 to be moved toward each other. This in turn causes the free ends of themembers 14 to be moved outwardlyand to be pressed into the walls of the hole 23 in the manner illustrated in Figure 2. This, operation is continued until the head members '13 engage the ends of the sleeve 22, which is forthe purpose of preventin the anchoring plates from completely col apsing, in which case the strength of the anchor would be greatly reduced, as has been a experiment. {The hole 23 may then be tamped full of dirt or any other suitable materia after which the anchor isready forusei Y It will be seen' that as the anchoring lates 14 are moved from the position shown in Figure 1 to the position shown in Figure .2, the metal at the intersection of the head member 13 and the anchors 14 will be bent certain 'amou'ntof energy is required to perform the straightening of the plate s. I find in 9 er anchors that the amount of power required to straighten the plates at this pomt is negligible. In cases where heavier, plates are used, then it is desirable to hinge the anchor members to the head members, in the manner illustrated in Figure 5. Each of the head members 13 has one end provided with a'slot 24 and the other, end provided with a tongue 25. The slot in the upper head memberis positioned opposite to the slot of the lower head member. Each of the anchor plates 14 is provided at one end with a slot 26 and its opposite end with a tongue 27. The slot 26 of one of the members 14* is placed over the tongue 25 "Gil - fied form of Figures 1 and 3, in w of the head member 13, while'the tongue 27 of said anchor plate is placed in the slot 26 of another one of the anchor lates 14, and the tongue 27 of'the mem er 14 is laced in the slot 24 of the upper head memr 13. Y By this arrangement it will be seen that all of the anchor plates are alike, as well as both head members 13', so that but a single set of dies is required to make all of the anchoring plates, and another set of d1es to make the head members. This modified form of my device is operated the same as the preferred form.

In Figure 4 I have shown a shghtliy;

ich an extra set of head members and anchoring plates are placed,0n the rod 12, one set at right angles to the other, in the manner clearly illustrated, thereby providing meanswhereby a double amount of anchorage may be obtained if so desired. This is sometimes desirable when the anchor is used in comparatively soft ground. Thus it'will beseen that I have provided a cable anchor which is constructed entirely of stock metal. The head members and anchor plates are formed of a bar of sheet metal of the proper width and thickness, which is cut into sections and then bent nto sha making a very strong and efficient anc or, and at the same time comparatively light. o

. Considerable advantage is gamed m llghtsuing the weight of the anchor, which de-v creases the actual cost of construction, as well as decreasing the'expense of shipping and handling. B providing the reinforcing plates 17 the hea members are strengthened to overcome the' weakness caused by forming the o enings 18, the reinforcing plates I being pre erably spot'welded in positionon the head members.

When the device is expanded to the posi-,

'tion shown in Figure 2, a very strong and effective anchor is provided. The upper one ,of the head members, together with its coacting anchor plate, gives the proper an ,chorage area, to carry the pulling strain of y the rod 10.- The lower one of the head members together with the sleeve 22 imparts the modidirt outwardly from the shaft 10, rather than in a line parallel with the said rod 10.

I claim as my invention: I 1. A cable anchor comprising 'a pair of spaced head members, each a central opening, one of said ead members being provided with an opening at each end and the other with a tongue at each end, a series of hinge plates having comparatively thin ends, each of said plates having at one end an opening and at its opposite end a tongue, the openings of a pair of said plates being-designed to receive the tongues of one of said head members while the other openings of the other head member are designed to receive the tongues of another pair of hinge members, said rovided with hinge members being mounted to normally project inwardly, thetongue of one of the inner .ends of the corresponding plates being designed to enter an opening of the adjacent end of the other corresponding 'plate, an anchor rod having one end screw threaded and extending through the openings of'said head members, and nuts on said being provided with an opening at each end and the other with a tongue at each end, a series of hinge plates having comparatively thin ends, each of said plates having at one end an opening and at its opposite end a tongue, the openings of a pair of said plates being designed to receive the tongues of one of said head members while the other opening of the other head member is designed to receive the tongues of another pair of hinge members, the said hinge members being mounted to normally project inwardly, the

tongue of one of the inner ends of the corresponding plates being designed to enter an opening of the adjacent end of the other corresponding plate, an anchor rod having one end screw threaded fund extending through the openings ofsaid head members,

' nuts on said screw threaded portion to force said head members inwardly toward each otherand the inner connected ends of said lid plates transversely as theanchor rod is rothe outer surface of each of the head mem- ,bers for reinforcing the same.

i ELMER K, COLE.- 

